Finding the Third Proportional to 67,879.69 and 89,263.69

Step by Step Solution

1. Step 1: Write the proportion equation
   67,879.69 : 89,263.69 = 89,263.69 : x
2. Step 2: Convert to fraction form
   67,879.69/89,263.69 = 89,263.69/x
3. Step 3: Cross multiply
   67,879.69x = 89,263.69 × 89,263.69
4. Step 4: Simplify right side
   67,879.69x = 7,968,005,906.10
5. Step 5: Solve for x
   x = 7,968,005,906.10/67,879.69
6. Step 6: Final answer
   x = 117,384.25